Improvement in rolls for rolling wedges



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` Rolls for Rolling Wedges. N0, 146593, Patent-edxamgqna14.

W' "fjwenong /a l Wk QQ. wm M A Ybwvmg l 1. c. KLEIN. Rolls for Rolling wedges. No. 146,598@ L Eateni NITED STATES JOHN c. KLEIN, 0E rrTTsEUnG, PENNSYLVANIA.

`IMPROVEMENT IN ROLLS FOR ROLLING VilEDGEjS".` L

Specification forming part of Letters Patent No. 146,598. dated January 20, 1874; application filed' May 2, 1872.

To all whom it may concern:

Be it known that I, JOHN C. KLEIN, of Pittsi burg, in the county of Allegheny and State of Pennsylvania, have invented certain new `andnseful Improvements in Machinery for Rolling Wedges, Src., of which the following is a specification:

is to provide means for intermitting the operi ation of the rolls, when it is desired to stop the machine in order to give the attendant time to insert a new blank or to adjust the dies; andthe improvement consists in combining oscillating rolls and a continuouslyrevol-ving shaft with a connecting-rod provided with hinged links and pivoted levers,in such manner that the connecting-rod may be thrown into or out of gear with the drivingshaft, and impart motion to the rolls either continuously or intermittently, as hereinafter described.

The object of the next part of my invention is to provide an improved mode of securing the dies to the rolls, so as to form blanks with tapering sides and to be capable of adjustment for diiferent inclinations; and the improvement consists in combining a roll having a socket with a projecting or inclined side, a die with a correspondingly formed side to iit the socket, a key for securing the die to the roll, and a liner for adjusting the die eccentrically to the roll, as hereinafter described.

The object of the next part of my invention is to provide improved dies for rolling tapers, which consists in dies formed with converging ridges, which ridges bite the iron `and draw itin to the rolls, thus facilitating the operation, and also form grooves in the wedge, which prevent the wedge from being too easily withdrawn from its work.

l In the accompanying drawings, Figure 1 is Y a perspective view, showing the general construction of my improved machine, with the connecting-rod in position for arresting the movement `of the rolls when the dies are toward the front of the machine. Fig. 2 is an enlarged view of the connecting-rod detached,

with its parts in position for imparting a continuous movement to the rolls; Fig. 3, a similar view of the same, with its parts in position to stop the rolls instantaneously at any part of their travel; Fig. 4, a similar view of the same, with its parts in position for arresting the movement of the rolls when the dies are turned toward the rear of the machine; Fig. 5, a front elevation ofthe machine, with the dies turned toward the front; Fig. 6, a transverse section through the rolls in the line w w of Fig. 5, enlarged to show the manner of adjusting and securing the dies to the rolls; Fig. 7, a crosssection of one of the dies -at right angles to Fig. 6; Fig. 8, a transverse section through the rolls in the 'line :v x of Fig. 5, showing the dies for forming wedges, and also the device for preventing the blank from passing too far between the dies; Fig. 9, a perspective view of a blank after having passed through the dies shown in Fig. 6; and Fig. 10, a perspective view of a wedge when completed. Fig. 11 is an enlarged front view of one of the dies, showing the raised ridges.

A bed-plate, A, of suitable form, has pillowblocks B B boltedto it, which support a driving-shaft, C, that is revolved continuously by the primemover. Housings D D are also secured to the bed-plate and receive bearings which support the journals of a pair of rolls, E E', in the usual way. To one of the journals of each of the rolls are secured segmentgears F F', which mesh with each other and are operated by a connecting-rod, Gr, from the v driving-shaft to communicate an oscillating movement to the rolls. The connecting-rod Gis journaled to a wrist-pin, f, on the lower segment-gear' F', and near its opposite end is slotted to receive the wrist-pin c of a crank, C', on the driving-shaft C. Links g g', slightly recessed at their free ends, are pivoted to the connecting-rod at the extremities ofthe slot in which `the wrist-pin works `and through which it protrudes, so that when their free ends are raised, as presently to be described, they form a bearing for the wrist-pin. Footlevers H H are pivoted to the bed-plate adjacent to the housings, and are provided with spring-arms h h', which extend back to such a distance that when the treadle ends of the foot-levers H H are depressed, the springi arms will bear against the links g g and press them rup against the top of the slot in the connecting-rod G, in which position the wrist-pin c will be in gear with the connecting-rod, and motion will be imparted continuously to the rolls. (See Fig. 2.)

When, on the other hand, the foot-levers are left free, the spring-arms and links will drop of their own gravity, and the Wrist-pin c will travel in the slot Without imparting motion to the rolls. (See Fig. 3.) When the foot-lever H is depressed, and the links g consequently elevated, the rolls will be brought in the proper position for feeding the blank to the dies, and there arrested, (see Fig. 1;) but if it is desired to arrest the rolls at the opposite extremity of their travel, they will be brought to and arrested in that position by depressing the foot-lever H', and consequently elevating the link g', as seen in Fig. 4.

In order to roll tapering blanks for crowbars and other purposes, I provide dies I I', grooved coucentrically with the rolls, and secured therein to suit the desired taper of the blanks, as follows: A recess'or socket having one of its sides inclined, as seen in Fig. 7,`is formed in the roll, into which the die having a correspondingly-inclined side is inserted, and one of its ends is elevated, so as to give it more or less eccentricity with the roll,to suit the taper of the blank required, by inserting beneath it a'liner, 1, having a projecting head or ila-nge, i2. A key, 3, is inserted between the head of the liner and the opposite side of the groove of the roll, and, when driven home, holds the die firmly in position for its work.

By using liners of dierent thicknesses, blanks of correspondingly-different tapers may be formed.

By means of these dies, a rectangular blank can be partially tapered, as shown in Fig. 9, and the metal at the same time prevented from spreading laterally at the tapering end of the blank by the ilanges on the sides of the die that form the walls of the groove.

In order to complete and finish the crowbars or wedges by the rolling operation, I provide dies K K1, secured in recesses in the rolls, and having grooves formed therein eccentrically to the rolls that taper to the surface of the dies, so that the iron can be rolled to an edgee It ywill be readily seen that, if a rectangular bar were passed between the dies K K1, the metal would be spread laterally at that part of the die where' the groove terminates, as

it would have no .flan ges or side Walls to confine it in that direction, and would consequently form a wedge that would be wider at its edge than at the butt or larger end. This I obviate by rst passing the rectangular blank between the dies I I', which tapers the blank and reduces the bulk of metal at the smaller end of the wedge to such an ,extent that, when tinned a half-turn and passed between the dies KVK, the blank will Abe formed into a Wedge having parallel sides or edges.

In order to cause the dies to take hold more firmly upon the wedge-blank, as well as to' form depressions in the finished Wedge,wl1ich will enable it to be used with greater efficiency, the dies are provided with a series of converging ridges, K2, and also a longitudinal ridge, which further facilitates these objects.

To prevent the blank from being inserted too far between the dies in the operation of rolling, I provide tongs L, having stops l l/ formed upon their griping ends, which abut against the ends of the dies, and prevent the blank from being inserted too farbetween the dies.

By means of the improved connecting-rod, which permits the rolls to be stopped at pleasure, I am enabled to manipulate the work more completely. The dies can be readily removed, replaced, and adjusted; and the improved method and devices herein described enable me toform and finish a wedge entirely by the operation of rolling.

I claim as my invention and desire to secure by Letters Patent- 1. The combination of oscillating rolls, a continuously-revolving driving-shaft, and a connecting-rod provided with hinged links and pivoted levers, these parts being combined to operate for intermittin g the operation of the rolls, substantially as set forth.

2. The combination of a roll having a recess with a projecting side, a die having a correspondingly-formed side to fit the recess, a liner for adjusting the eccentricity of the die, and a key to secure the die to the roll, substantially as and for the purpose set forth.

3. The die provided with converging ridges, to form a Wedge with depressions corresponding to the ridges, substantially as set forth.

JOHN CHR, KLEIN.

YVitnesses WVM. H. Rown, DAVID A. BURR. 

